<!DOCTYPE html>
<html>
<head>
<style>
a:link {
  background-color: yellow;
}

a:visited {
  background-color: cyan;
}

a:hover {
  background-color: lightgreen;
}

a:active {
  background-color: hotpink;
} 
</style>
</head>
<body>

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</body>
</html>

